Auxiliary tool for manually assembling overweight disc-shaped part

Abstract

The utility model relates to an auxiliary tool for manually assembling an overweight disc-shaped piece, which is used for manually assembling a steel disc-shaped piece with the weight of more than 40Kg in a threaded manner, and comprises a lifting hook, a rhombus device hung on the lifting hook, and a screw rod penetrating through the left and right opposite angles of the rhombus device, screw rods are connected to a left diagonal hinge shaft and a right diagonal hinge shaft of the rhombic device in a threaded mode, a lifting hook is installed on an upper hinge shaft of the rhombic device, a pulley is installed on a lower hinge shaft of the rhombic device, a lifting belt is sleeved on the pulley, and a centering assembly is borne on the lifting belt. Firstly, the screw of the rhombus structure is rotated to enable the rhombus to expand in the horizontal direction, the centering assembly is lifted to a rough assembly position through the lifting belt, the height of the centering assembly is reduced by adjusting the screw, the centered internal thread and the external thread of the product are located at the same height, and the height position of the centering assembly can be easily adjusted by rotating the screw of the rhombus structure. The sling and the pulley are used for rotary assembly, so that the assembly labor intensity of the centering assembly can be greatly reduced, and the field assembly difficulty is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical assembly technology, and in particular relates to an auxiliary tooling for manually assembling heavy disc-shaped workpieces weighing more than 40 kg using thread assembly. Background Technology

[0002] In the development of various disc-shaped components such as centering assemblies, the designed prototypes generally undergo accelerated testing. Current product development trends favor larger and heavier models, with the diameter of testing equipment evolving from the initial Φ200-300mm to Φ480-560mm. To match the diameter of the testing equipment, the product needs to be equipped with a centering assembly during testing. During testing, test elements must first be installed on the product in an outdoor environment before the centering assembly is installed. Since accelerated testing is often conducted in remote areas with only simple cranes and lacking precise positioning capabilities, the on-site assembly of the centering assembly is entirely manual.

[0003] The centering assembly includes components such as a front centerer, a rear centerer, a pressure ring, and a sealing ring. The rear centerer is a 200mm thick disc-shaped component that connects to the product's tail end using a blind hole thread on its end face. To protect the product body and ensure sufficient thrust during testing, the rear centerer must have sufficient strength. Therefore, the weight of the rear centerer has increased from 15kg in Φ200-300mm testing devices to over 40kg in Φ480-560mm testing devices. The centering assembly is connected to the product body via threads. During assembly, the assembly area is cleaned, and the threads are manually aligned for installation. Operators can barely operate the assembly when the rear centerer weighs less than 30kg; however, exceeding 30kg puts manual operation at its limit, frequently resulting in thread misalignment, thread damage, and other abnormalities. This severely impacts the on-site testing process, causing tests to be delayed. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide an auxiliary tooling for the manufacture of heavy disc-shaped parts. This tooling utilizes simple hoisting conditions, allows manual adjustment of the threaded connection position, ensures assembly quality, and reduces labor intensity. Compared with normal hoisting, the newly designed auxiliary tooling uses a rotating diamond-shaped screw to adjust the height of the centering component, and uses pulleys and slings to form the rotation function of the centering component. This allows the assembly position to be adjusted during the assembly of the centering component, and the assembly effect is achieved through rotation.

[0005] The purpose of this utility model is achieved as follows: an auxiliary tooling for manually assembling heavy disc-shaped parts includes a hook, a rhomboid device suspended on the hook, and screws threaded through the left and right diagonals of the rhomboid device. The rhomboid device is a quadrilateral movable hinge structure. Screws are threadedly connected to the left and right diagonal hinge shafts of the rhomboid device. A hook is installed on the upper hinge shaft of the rhomboid device, and a pulley is installed on the lower hinge shaft of the rhomboid device. A lifting strap is fitted on the pulley, and a centering component is carried on the lifting strap.

[0006] The rotation axis of the pulley mounted on the lower hinge shaft of the rhomboid device is coaxial with the lower hinge shaft.

[0007] The present invention will achieve the following effects after adopting the above technical solution:

[0008] When using, first place the product horizontally and secure it firmly. Use a crane to lift this auxiliary device, and first rotate the screw of the diamond structure to expand the diamond horizontally. Use the slings to lift the centering component to the approximate assembly position, adjust the screw to lower the height of the centering component, so that the internal thread of the centering component is at the same height as the external thread of the product, and pull the slings to rotate the centering component until the internal and external threads are screwed into place.

[0009] The height of the centering component can be easily adjusted using a screw with a rotating diamond structure. The assembly can be performed by rotating it using slings and pulleys. This significantly reduces the labor intensity of outdoor manual assembly of such heavy disc-shaped components as the centering component, effectively reduces the difficulty of on-site assembly, and ensures the smooth progress of scientific research experiments. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the on-site assembly of this utility model using auxiliary tooling.

[0011] Figure 2 An assembly diagram in the prior art when there are no tooling.

[0012] Figure 3 This is a structural diagram of the hoisting product of this utility model.

[0013] In the figure, 1 is the hook, 2 is the screw, 3 is the diamond-shaped device, 4 is the pulley, 5 is the sling, 6 is the centering component, 7 is the product, and 8 is the threaded connection structure. The centering component has a diameter of Φ480mm, a length of 160mm, and a weight of approximately 70Kg. Detailed Implementation

[0014] like Figure 1As shown, an auxiliary tooling for manually assembling heavy disc-shaped parts includes a hook 1, a rhomboid device 3 suspended on the hook 1, and screws 2 passing through the two opposite corners of the rhomboid device 3. The rhomboid device 3 is a quadrilateral movable hinge structure. Screws 2 are threadedly connected to the two opposite corner hinge shafts of the rhomboid device 3. The hook 1 is installed on the upper hinge shaft of the rhomboid device 3, and a pulley 4 is installed on the lower hinge shaft of the rhomboid device 3. A lifting strap 5 is fitted on the pulley 4, and a centering component 6 is carried on the lifting strap 5.

[0015] The rotation axis of the pulley 4, which is mounted on the lower hinge shaft of the rhomboid device 3, is coaxial with the lower hinge shaft.

[0016] Before using the auxiliary tooling, place the product horizontally at a height of approximately 1 meter, securely fix it, and leave sufficient space for assembly by suspending the tail end to be assembled. Wipe the threaded structure 8 of the product 7 and centering component 6 at the assembly position clean, and check the threads for any damage or residue. Use a crane to lift the auxiliary device. First, rotate the screw 2 of the rhombus device 3 to expand the horizontal direction of the rhombus device, leaving sufficient adjustment space for lowering the height. Use the lifting strap 5 to slowly lift the centering component 6 to the approximate assembly position. Adjust the screw 2 of the rhombus device 3 to lower the height of the centering component 6 so that the internal thread of the centering component 6 is at the same height as the external thread of the product. Manually push the centering component 6 to ensure the assembly position is flush. Slowly pull the lifting strap 5 to rotate the centering component 6, starting slowly and observing carefully. Once you are sure that the internal and external threads are smoothly engaged, then pull the lifting strap 5 to rotate the assembly until the threads are properly assembled.

Claims

1. An auxiliary tool for assembling an over-weight disc-shaped part by hand, comprising a hook (1), a diamond-shaped device (3) hung on the hook (1), and a screw rod (2) threaded on two opposite corners of the diamond-shaped device (3), characterized in that: The rhomboid device (3) is a quadrilateral movable hinge structure. Screws (2) are threaded onto the left and right diagonal hinge shafts of the rhomboid device (3). A hook (1) is installed on the upper hinge shaft of the rhomboid device (3). A pulley (4) is installed on the lower hinge shaft of the rhomboid device (3). A sling (5) is fitted on the pulley (4). A centering component is carried on the sling (5).

2. The auxiliary tool for assembling an over-weight disc-shaped part by hand according to claim 1, characterized in that: The rotation axis of the pulley (4) mounted on the lower hinge shaft of the rhomboid device (3) is coaxial with the lower hinge shaft.

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